Rotary refiner



Oct. 30, 1928.-

E. P. ARPIN, JR

ROTARY REFINER Filed Aug. 8, 1927 2 Sheets-Sheet l Oct. 30, 1928.

E. P. ARPIN, JR

ROTARY REFINER Filed Aug. 1927 2 Sheets-Sheet VB [1.5 Edmund P 5 0171.711

Patented Oct. 30, 1928.

rrs TT eague ATENT OFFICE.

ROTARY REFINER.

Application filed. August 8, 1927. Serial no. 211,276.

This invention relates to a rotary refiner for refining wet, fibrous material, such as pulp, paper stock and the like.

It is an object of this inventionto provide a rotary refiner of simple rug ed construction that may be used in the refining of fibrous material, pulp and paper stock and which embodies certain improved construction for the feeding of the fibrous material to the refining elements.

Other and further important objects of this invention will become apparent from the disclosures in the following description and appended claims.

In the accompanying drawings which illus trate a preferred embodiment of this invention and in which similar reference numerals refer to similar features in the different views: 7

Figure 1 is a vertical sectional view of a rotary refiner embodying the principles of my invention, with parts in elevation.

Figure 2 is a reduced sectional view taken on 1ine-IIII of Figure 1.

Figure 3 is a reduced sectional view taken on line 111-111 of Figure 1.

Figure 4 is an enlarged sectional view with parts in elevation, illustrating the feeding mechanism.

Figure 5 is a vertical sectional view with parts in elevation of a modified form of my device.

As shown on the drawings:

The reference numeral 1 indicates a casing or casting adapted to be mounted upon a hollow base 2 and to house the refining elements. Said casing 1 is provided with a lower intake 3 for the admission'of wet fibrous material, pulp, paper stock and the like, through an intern'lediate cylindrical portion 4 of said casing 1. An upper section 5 providing an outlet 6 is secured to said intermediate cylindrical section 4, by means of bolts 7. Said in-,

material, such as stone, )orous iron or the.

. like. If the lining 9 is 0 stone, it is preferably composed of a plurality of segments secured in the recess 8 and presenting a cylindrical inner abrasive surface for coaction with the refining elements.

A vertical shaft 10 is suitably journalledin bearings 11 and 12 formed in the upper section 5 and the lower portion of the casing 1 respectively. Said shaft 10 is provided with a lower end 13 extending into the hollow base 2 and having secured thereto a gear 14 adapted to mesh with a worm gear 15. on a driveshaft 16. The driveshaft 16 may be driven by any suitable source of power, such as an electric motor (not shown). At the intake end of the shaft, there is mounted an impeller 17 for drawing the wet fibrous material under suitable head into the refiner. Said impeller'17, as best shown in Figure 3, is secured to the shaft 10 by means of a key 18 and is provided with spiral radial arms 19 extending to the inner surface of the intermediate casing section 4. Immediately above the impeller 17 and similarly keyed to said shaft 10, is mounted a lower plate 20 having circumferential openings 21, preferably semi circular in section and closely adjacent the ends of each of said impeller blades 19. An upper plate 22 of. smaller diameter is similarly keyed to the shaft 10 and spaced apart from the lower plate 20 to include between said plates refining elements 23 and 24. Said refining elements 23 and 24 are pivotally and eccentrically mounted upon pins 25 extending between said plates 20 and 22 for rotation therewith. Each of said refining elements 23 and 24 comprises an irregularly shaped plate, formed either of stone or metal, and having an outer arcuate face 26 adapted to conform with and bear against the inner 1 face of the lining 9. The forward portion of each of said arcuate faces 26 curves away from the inner face of the lining 9 in the direction of rotation, as at 27, to form an acute angle therewith. The various refining elements 23 and 24 are so positioned relative to the openings 21 that the stock is directed through said openings 21 by means of the impeller 17 and deflecting plates 28 against the forward faces 27 of said refining elements. The deflecting plates 28 (Figure 4), are formed on the plate 22 to partially surround the openings 21 and catch and direct the wet fibrous material impelled by the impeller blades 19 against the refining elements 23 and 24 as described.

It will thus be apparent that efficient means have been provided for feeding thestock to the refining elements. It is obvious that the fibrous material will work between the aresaid refining elements are pivoted eccentrically with respect to their mass. The speed of rotation of the shaft 10 may be adjusted to effect the desired refining action in a single rotary refiner of the typedescribed or a battery of such refiners may be used in series. The curvature of the impeller blades 19 is set was to effect the necessary rate of flow of fibrous material through the refiner and out through the outlet 6.

In the modified form of my refiner, illustrated in Figure 5, the central shaft 30 is disposed horizontally so that the refining elements 31 rotate in a vertical lane. Otherwise, the structure of the modi ed form of refiner is similar to that above described. The fibrous material enters through an inlet 32 and is directed by means of an impeller 33 through openings 34 in the plate 35 and by means of deflector lates 36 the fibrous material is deflected between the outer faces of the refining elements 31. and the inner surfaces of the abrasive lining 37. The refined stock is discharged through an outlet opening 38.

I am-aware that many changes may be made and numerous details of construction may be varied through a wide ran e without departing from the principles of this invention and I, therefore, do not purpose limiting the patent granted hereon, otherwise than necessitated y the prior art.

I claim as my invention:

1. A rotary refiner for paper stock, pulp and the like, comprising a casing having inlet and outlet ports, a shaft journalled therein, an impeller secured to said shaft, a pair of spaced plates mounted. upon said shaft,.

pins rigidly secured at their respective ends one of sai plates having openings, and deflecting means associated with said openings for dlrectin stock between said refining members an said casing inner wall.

2. A rotary refiner for wet fibrous material, comprising a cylindrical shell having an 1nner abraslve surface, spaced plates r'otatably mounted within said shell, eccentrically pivoted refining members mounted between said plates, one of said plates having circumferential openings, and deflecting means associated with said openings for directing material therethrough between the adjacent surfaces of said refining members and said shell.

3. A rotary refiner for wet fibrous material,

comprising a casing having inlet and outlet ports, a cylindrical lining for said casing having an abrasive surface, a shaft mounted axially of said lining and journalled in said casing,axially spaced plates secured to said shaft, one of said plates having peripheral openings, refining members pivotally mounted between said plates, said refining members having outer arcuate faces adapted to bear against the abrasive surface of said lining and an impeller on the intake side of said plates secured to saidshaft for forcing material through said openings between the bearing surfaces of refining members and said lining.

p 4. A rotary refiner for wet fibrous material, comprising a casing having inlet and outlet ports, a cylindrical lining for said casing having an abrasive surface, a shaft mounted axially of said lining and journalled in said casing, axially spaced plates secured to said shaft, refining members pivotally mounted between said plates, said refining members having outer arcuate faces adapted to bear against the abrasive surface of said lining and an impeller on the intake side of said plates secured to said shaft for forcing material between the bearing surfaces of refining members and said lining, one of said plates having openings and deflectors associated with said openings for properly directing the material.

5. In a rotary refiner for wet fibrous materials, a cylindrical shell, avplurality of rotatable spaced refining members eceentrically pivoted with respect to the axis of said shell and theirown mass and provided with arcu ate outer faces adapted to contact and conform with the inner surface of said shell, said arcuate faces curving away from said shell surface in the direction of rotation of said members and means for directing material between saidarcuate faces and said shell surface, including an impeller rotatable with said refining. members and having blades terminating forwardly of said arcuate faces.

6. A rotary refiner for wet fibrous material, comprising a casing having inlet and outlet ports a cylindrical lining for said casing having an abrasive surface, a shaft mounted axially of said lining and journaled in said casing, axially spaced plates secured to said shaft, one of said plates being of substantially the same diameter as the inner diameter of said cylindrical lining and having peripheral opening-s, deflector plates adjacent said openings and refining members pivotally mounted between said plates and adapted bear against said abrasive surface.

7. A rotary refiner for wet fibrous material, comprising a casing having inlet and outlet ports,-a cylindrical lining for said. casing having an abrasive surface, a shaft mounted axially of said lining and journaled in said casing, axially spaced plates secured to said shaft, one of said plates being of substantiall-y the same diameter as the inner diameter of said cylindrical lining and having peripheral openings, deflector plates adjacent said openings, refining members pivotally mounted between said plates and adapted to bear against said abrasive surface, and an impeller secured to said shaft for directing material. through said openings against said deflectors.

In testimony whereof I have hereunto sub- 10 scribed my name at Port'Edwards, Wood County, Wisconsin.

EDMUND P. ARPIN, JR. 

